A uniform rod of mass m, length L, area of cross-section A and Young's modulus Y hangs from the ceiling. Its elongation under its own weight will be

A uniform rod of mass m, length L, area of cross-section A and Young's

1.	A uniform rod of mass m, length L, area of cross-section A and Young's modulus Y hangs from the ceiling. Its elongation under its own weight will be
Answer» 0 `(MGL)/(2AY)` `(mgL)/(AY)` `(2mgL)/(AY)` ANSWER :B